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Finding the Fourth Proportional to 153,010.10, 211,149.70 and 85,025.32

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Solution

The fourth proportional to 153,010.10, 211,149.70 and 85,025.32 is: 117,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,010.10 : 211,149.70 = 85,025.32 : x
  2. Step 2: Convert to fraction form
    153,010.10/211,149.70 = 85,025.32/x
  3. Step 3: Cross multiply
    153,010.10x = 211,149.70 × 85,025.32
  4. Step 4: Simplify right side
    153,010.10x = 17,953,070,810.40
  5. Step 5: Solve for x
    x = 17,953,070,810.40/153,010.10
  6. Step 6: Final answer
    x = 117,332.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.